Book excerpt: The Progress in Brain Research series highlights new advances in the field, with this new volume presenting interesting chapters. Each chapter is written by an international board of authors. - Covers all key aspects of current research on 5-HT interaction with other neurotransmitters - Provides extensively referenced chapters, thus giving readers a comprehensive list of resources on topics covered - Includes comprehensive and in-depth background information written in a clear form that is accessible to both specialists and non-specialists